We’ve seen a good number of images claiming to be the sixth-generation iPhone’s rear panel in recent weeks, all of which feature identical designs. But what isn’t entirely clear from these images is just how different these leaked panels are when compared to those that feature on our iPhone 4 or iPhone 4S.

However, thanks to this video from parts supplier ETrade Supply, it’s easy to see the changes Apple has made to its next iPhone (assuming this is indeed a genuine part, of course). And there are a lot of them.

According to pre-WWDC scuttlebutt, iOS 6 won’t be a huge departure from what we’ve got now, at least when it comes to stand out system features. What we will see, however, is a total revision of Apple’s core apps, most noticeable in Apple’s totally overhauled, Google-free Maps app, along with a sexy new silver UI.

What will it all look like in action, though, on the new, possibly elongated iPhone 5, when it ships in September or October? Over on the Apple Core forums, user gizmosachin created some nice mockups of what all the pieces will look like when glued together.

You sometimes here people talk about the iPhone 4S as if it’s a minor upgrade, but even if you’re not wooed by Siri, the camera on the iPhone 4S makes it worth a whole new phone in itself if you have even the most cursory interest in photography. The 8MP back-side illuminated sensor provided by Sony is a marvel — arguably the best camera sensor on a mobile phone outside of the crazy new Nokia PureView 808 — and a serious, serious upgrade over the 5MP OmniVision sensor found in the iPhone 4.

But don’t count OmniVision out for Cupertino’s iPhone 5 business. The Californian digital sensor maker have just announced a crazy 16MP back-side illuminated sensor that could theoretically put the iPhone 4S’s image quality to shame. Even better? Since they are capable of shooting video in 4K resolution at 30 frames per second, they’d take perfect images and videos for those rumored new Retina Macs we’ve all been hearing about.

With Apple’s sixth-generation iPhone set to make its debut this year, there’s no doubt the company has a number of prototype devices — all with different designs and specifications — in testing within its Cupertino headquarters. One of those handsets is said to feature a 3.95-inch widescreen display with a 640 x 1136 resolution that’s taller than all the existing 3.5-inch iPhone displays we’ve seen to date.

Almost every tech publication there is has been claiming that the next iPhone will have a 4-inch screen, culminating with the Wall Street Journal‘s report today basically confirming it, but there’s still a lot of debate over how Apple will make the screen larger without bringing on a lot of extra bulk to the device. Should they make it taller? Wider? What about making room for LTE?

Here are 12 cool iPhone 5 concepts that envision what Apple’s next iPhone might look like. If you want to know what we think, though, check out this opinion piece we wrote for Wired on why we think the 4inch iPhone makes a lot of sense.

Before we read any further into these claims, let me just reveal where they came from: DigiTimes. While the site has published a few accurate reports on upcoming Apple products in the past, most of its rumors are worryingly farfetched.

The latest claims sources in Apple’s supply chain have detailed the Cupertino company’s launch plans for 2012, promising three new iOS devices between now and the end of the year. One of those will, as you’d expect, be the sixth-generation iPhone, but before that, we will see a new, 7-inch iPad.

What’s more, that new iPad you just bought will apparently be replaced by an even newer one during the fourth quarter.

Many of us are dreaming of a liquidmetal casing for the next iPhone which will sport a tapered, teardrop design that will help make the sixth-generation device thinner than its predecessor. However, a SIM tray that is believed to be destined for the new device suggests it could feature a box-like design similar to the iPhone 4S.

This is a rather beautiful concept for what the next-gen iPhone could look like, courtesy of French designer Antoine Brieux. . It’s fanciful stuff, of course, featuring a Liquid Metal casing, but what I find most interesting is this idea that the home button could be replaced with a “virtual home button” that displays on a larger 4.5-inch widescreen display.

Everyone is hoping that the next generation iPhone will be unveiled with significant design changes. Maybe an aluminum backing, a bigger screen, or even a haptic home button will make an appearance on a redesigned iPhone. Details are scant on what the “iPhone 5” will look like, but if these newest leaks are to be believed it looks like the next iPhone will still have a home button.

New part leaks were spotted today on TVC Mall that show black and white home buttons for the iPhone 5. At first glance the buttons look like those found on the newest iPhone 4S, but closer inspection shows a few differences.

Your iPhone’s touchscreen might look just like a single pane of living glass, but there’s a lot more going on than meets the eye. Every iPhone is comprised of multiple layers: an LCD that actually blasts the pixels out of the Retina Display, a glass substrate laye separating the LCD from the touch layer that translates your finger swipes and prods into input the system can read, and a layer of protective Gorilla Glass on top.

Obviously, Apple’s existing touchscreen tech works well, but having so many different layers has its drawbacks. A big one is that it adds to the iPhone’s thickness. But Apple may already be on the cusp of inking a deal with Sharp and Toshiba to adopt in-cell touch panel displays, which should lead to a slimmer, lighter iPhone 5.